activate

#!/bin/bash

if [ "${BASH_SOURCE-}" = "$0" ]; then
    echo "You must source this script: \$ source $0" >&2
    exit 33
fi

clone_function() {
    local ORIG_FUNC=$(declare -f $1)
    local NEWNAME_FUNC="$2${ORIG_FUNC#$1}"
    eval "$NEWNAME_FUNC"
}


# pipenv --venv shows error if virtualenv does not exist
venv=$(pipenv --venv)

if [ ! -z "$venv" ]
then
    source "$venv/bin/activate"

    # https://stackoverflow.com/a/246128/1731701
    _PROJECTPATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"

    # Add this project to the pythonpath
    _OLD_PYTHONPATH="$PYTHONPATH"
    export PYTHONPATH="$_PROJECTPATH"

    # Extend virtualenv deactivate function
    clone_function deactivate _old_deactivate
    unset -f deactivate
    deactivate() {
        _old_deactivate 
        export PYTHONPATH="$_OLD_PYTHONPATH"

        unset -f _old_deactivate
        unset _OLD_PYTHONPATH
        unset _PROJECTPATH
    }
fi

unset venv